This storyline seems ripe for planeswalkers to die. I feel like this would be a decent vehicle to knock out some walkers we see all the time, and give us a bunch of new walkers to follow. Kind of taking up the mantle of the Gatewatch, in memoriam.
But, Wizards is also really into merchandising and love their main five walkers and Bolas. How likely is it that more than one long-term walker dies by the end of this story?
My guess is at least one, possibly two - Jace and/or Vraska. I know people will disagree with that, but the promo for the upcoming Chandra comic book puts it after Ravnica and describes it as Chandra dealing with the "recent tragedy" that happened there, or something to that effect. This would indicate to me someone she cares about is killed or hurt in some way. And with Nissa out of the picture at the moment, that doesn't leave a big list of possibilities. It could also be Liliana or Gideon, but they still have Stuff To Do storywise.
Dovin Baan isn't the only UW Planeswalker we've seen recently. There's also Azor, whose mind was crushed by Jace and left behind on Ixalan. It wouldn't be too far-fetched for Bolas to have gone back there to take a look once the Immortal Sun was gone and undo enough of that to make Azor a useful pawn. Especially given how motivated by revenge his actions seemed to be in the M19 story.
My guess is at least one, possibly two - Jace and/or Vraska. I know people will disagree with that, but the promo for the upcoming Chandra comic book puts it after Ravnica and describes it as Chandra dealing with the "recent tragedy" that happened there, or something to that effect. This would indicate to me someone she cares about is killed or hurt in some way. And with Nissa out of the picture at the moment, that doesn't leave a big list of possibilities. It could also be Liliana or Gideon, but they still have Stuff To Do storywise.